Apply as you would for LE commissioning, you need to have proof of an (Hons) degree, Level 2 Numeracy/Literacy, minimum rank of Sgt, selection board is in May, and an absolute recommendation for commissioning from your CO, with at least 2 CR's stating the fact, Oh and if you've got all that, and you're lucky enough to go to the board, they only take 2 a year, 3 if you're lucky. Good luck